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Transcription and Regulation

Transcription and Regulation
Transcription factors are

CATT boxes
TATA boxes
promoters
proteins which bind to DNA and regulate transcription

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Transcription and Regulation
The closed complex at bacterial promoters is

bound more tightly when repressors are present
not affected by promoter mutations
not affected by activator proteins
in equilibrium with free RNA polymerase and the promoter

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Transcription and Regulation
Transcription results in

an amino acid chain
complementary DNA
Okazaki fragments
messenger RNA

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Transcription and Regulation
Promoters for tRNAs are located

upstream from the start codon
none of these
both (a) and (b)
downstream from the start codon

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Transcription and Regulation
In eukaryotes, there are three different RNA polymerases. The RNA polymerase responsible for transcription of mRNA is

RNA polymerase I
RNA polymerase III
none of these
RNA polymerase II

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Transcription and Regulation
Transcription begins

none of these
upstream from the start codon
at the start codon
downstream from the start codon

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